Aqueous solutions are good buffer systems

Reference no: EM13203097

Which of the following aqueous solutions are good buffer systems ?

1. 0.30 M calcium perchlorate + 0.29 M barium perchlorate
2. 0.21 M nitrous acid + 0.17 M hydroiodic acid
3. 0.32 M ammonia + 0.38 M ammonium nitrate
4. 0.12 M potassium hydroxide + 0.22 M potassium chloride
5. 0.20 M hydrobromic acid + 0.25 M potassium bromide

Reference no: EM13203097

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